An emergency management centre has been activated and Ministry of Civil Defence & Emergency Management has warned of the potential of a tsunami hitting coastal areas.

It said in a statement on its website: ‘MCDEM and scientific advisors are in the process of assessing the situation to determine the severity of the threat to New Zealand.

‘Meanwhile, people in coastal areas should note that strong tsunami currents and surges are possible.

‘Listen to the radio and TV for further assessment and updates.’.

The earthquake measured 7.2 in magnitude, said the USGS (Picture: USGS)

The earthquake occurred off New Zealand’s north island (Picture: Alamy)

Elsewhere, the Pacific Tsunami Warning Center in Hawaii says it does not expect any tsunamis of significant strength, while the Chilean Navy has also dismissed the possibility of one hitting South America.

They tweeted that a small wave measuring around 21cm was reported after the quake, and there was no tsunami threat.